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Rulon Bearings

Alliance N-30UH Neodymium Iron Boron Magnetic Material
Categories: Metal; Electronic/Magnetic Alloy; Ferrous Metal

Material Notes: Neodymium magnets (NdFeB or Neo), are the most commonly used magnet materials for high tech motors and sensors. They are popular due to their high magnetic strength and resistance to demagnetization. They do not have the high temperature resistance of other magnet materials, however they can be used in applications with maximum operating temperatures of 220°C. Because of a high iron content, they will corrode over time if not plated or coated. As with all magnet materials, NdFeB should never be used as a structural element in an application.

Key Words: NdFeB; Neo, Magnet, Magnets
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Physical PropertiesMetricEnglishComments
Density >= 7.50 g/cc>= 0.271 lb/in³
 7.50 - 7.80 g/cc0.271 - 0.282 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Hardness, Vickers 570 - 580570 - 580
Tensile Strength 82.7 MPa12000 psi
Tensile Strength, Ultimate 80.0 MPa11600 psi
Modulus of Elasticity 152 GPa22000 ksi
 150 - 160 GPa21800 - 23200 ksi
Flexural Strength 180 - 270 MPa26100 - 39200 psi
Compressive Strength 850 - 1050 MPa123000 - 152000 psi
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 0.000120 - 0.000160 ohm-cm0.000120 - 0.000160 ohm-cm
 0.000160 ohm-cm
@Temperature 20.0 °C
0.000160 ohm-cm
@Temperature 68.0 °F
Magnetic Coercive Force, Hc 10200 Oe10200 Oe
 10200 - 12200 Oe10200 - 12200 Oe
 25000 Oe25000 OeIntrinsic
 25000 - 32000 Oe25000 - 32000 OeIntrinsic
Magnetic Remanence, Br 11000 Gauss11000 Gauss
 10800 - 11400 Gauss10800 - 11400 Gauss
Magnetic Maximum Energy Product, BH 28 - 31 MGOe28 - 31 MGOe
 28 - 31 MGOe28 - 31 MGOe
Curie Temperature 310 °C590 °F
 350 °C662 °F
 
Thermal PropertiesMetricEnglishComments
CTE, linear -4.80 µm/m-°C-2.67 µin/in-°FPerpendicular to M
 3.40 µm/m-°C1.89 µin/in-°FParallel to M
 5.00 µm/m-°C
@Temperature 20.0 °C
2.78 µin/in-°F
@Temperature 68.0 °F
Parallel DOM
CTE, linear, Transverse to Flow -1.00 µm/m-°C
@Temperature 23.0 °C
-0.556 µin/in-°F
@Temperature 73.4 °F
Perpendicular to M
Specific Heat Capacity 0.440 J/g-°C0.105 BTU/lb-°F
Thermal Conductivity 9.00 W/m-K62.5 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air 180 °C356 °F
 <= 180 °C<= 356 °FContinuous
 
Descriptive Properties
CompositionNd, B, Fe, Dy, Co
Required Magnetizing Force (Oe)60000
Reversible Temperature Coefficients-0.1α Br. %/°C
 -0.55β Hcj. %/°C

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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